class ActiveAdmin::Scope

def initialize(name, method = nil, options = {}, &block)


# => Scope with the group :status
Scope.new :published, nil, group: :status

# => Scope with dynamic title using the :published_today scope method
Scope.new ->{Date.today.strftime '%A'}, :published_today

# => Scope with name 'Published' using a block to scope
Scope.new('Published') { |articles| articles.where(published: true) }

# => Scope with name 'Published' and scope method :public, optionally displaying the scope per the :if block
end
articles.where published: true
Scope.new 'Published', :public, if: proc { current_admin_user.can? :manage, resource_class } do |articles|

# => Scope with name 'Published' and scope method :public
Scope.new('Published', :public)

# => Scope with name 'Published' and scope method :published
Scope.new(:published)

Examples:

Create a Scope 
def initialize(name, method = nil, options = {}, &block)
  @name = name
  @scope_method = method.try(:to_sym)
  if name.is_a? Proc
    raise "A string/symbol is required as the second argument if your label is a proc." unless method
    @id = method.to_s.parameterize(separator: "_")
  else
    @scope_method ||= name.to_sym
    @id = name.to_s.parameterize(separator: "_")
  end
  @scope_method = nil if @scope_method == :all
  if block_given?
    @scope_method = nil
    @scope_block = block
  end
  @localizer = options[:localizer]
  @show_count = options.fetch(:show_count, true)
  @display_if_block = options[:if] || proc { true }
  @default_block = options[:default] || proc { false }
  @group = options[:group].try(:to_sym)
end

def name 

def name
  case @name
  when String then @name
  when Symbol then @localizer ? @localizer.t(@name, scope: "scopes") : @name.to_s.titleize
  else @name
  end
end